Table 2.

Odds ratios for depression at age 18 based on victimisation at age 13 years

		Unadjusted odd ratios (95% CI)		Odd ratios (95% CI)
Victimisation status	No (%) depressed	All available data (n = 3796)	Complete cases (n = 2521)	Adjusted (n = 2521)a	Unadjusted using imputed datasetb	Adjusted using imputed datasetb
None	1734 (5.6)	1.00	1.00	1.00	1.00	1.00
Occasional	1409 (7.0)	1.26 (0.95–1.68)	1.11 (0.73–1.69)	0.86 (0.58–1.26)	1.14 (0.63–1.55)	1.03 (0.77–1.37)
Frequent	656 (14.9)	2.92 (2.17–3.93)	2.81 (1.95–4.59)	1.87 (1.18–2.95)	2.23 (2.10–3.98)	1.80 (1.22–2.43)

Note:

^a Adjustments: children’s individual characteristics (sex, emotional and behavioural problems aged 7, concurrent depressive symptoms and concurrent bullying perpetration aged 13) and family characteristics (social class reported by mothers, mother’s education, maternal depression and child maltreatment experiences between the ages of 5 and 7)

^b Missing confounders and additional sociodemographic variables used for imputation (n = 4040)